SmogRank / Countries / Mexico / January 2026

Most polluted cities in Mexico, January 2026

39 cities in Mexico ranked by their average PM2.5 over the 31 days. Worst: Tlaquepaque at 45.3 µg/m³, #56 of 2,047 cities in the world. Cleanest: Mérida at 8.5. A city needs measurements on 70% of the days to be ranked.

  1. 1TlaquepaqueJalisco
    45.3
  2. 2Hacienda Santa FeJalisco
    40.4
  3. 3XonacatlánMéxico
    34.8
  4. 4GuadalajaraJalisco
    34.1
  5. 5San Luis PotosíSan Luis Potosí
    28.5
  6. 6Zacatepec de HidalgoMorelos
    28.3
  7. 7Mexico CityMexico City
    26.2
  8. 8Silao de la VictoriaGuanajuato
    24.6
  9. 9Naucalpan de JuárezMéxico
    24.0
  10. 10PueblaPuebla
    23.9
  11. 11CuautlaMorelos
    23.2
  12. 12MexicaliBaja California
    23.0
  13. 13Parque Industrial Ciudad MitrasNuevo León
    22.9
  14. 14AguascalientesAguascalientes
    22.4
  15. 15San Martin Texmelucan de LabastidaPuebla
    21.5
  16. 16Santa AnitaJalisco
    21.3
  17. 17León de los AldamaGuanajuato
    20.4
  18. 17La Providencia Siglo XXIHidalgo
    20.4
  19. 19Tula de AllendeHidalgo
    20.0
  20. 20Ciudad General EscobedoNuevo León
    19.3
  21. 21TehuacánPuebla
    18.7
  22. 22AbasoloGuanajuato
    18.6
  23. 23TlaxcalaTlaxcala
    18.3
  24. 24ZapopanJalisco
    18.2
  25. 24ChihuahuaChihuahua
    18.2
  26. 26Santiago de QuerétaroQuerétaro
    17.9
  27. 27CuernavacaMorelos
    17.8
  28. 28Ciudad JuárezChihuahua
    17.4
  29. 29YecapixtlaMorelos
    16.6
  30. 30San Juan del RíoQuerétaro
    16.3
  31. 30Ciudad ApodacaNuevo León
    16.3
  32. 32TulancingoHidalgo
    16.2
  33. 33San Miguel de AllendeGuanajuato
    15.9
  34. 34MonterreyNuevo León
    15.8
  35. 35TijuanaBaja California
    15.6
  36. 36GuanajuatoGuanajuato
    13.1
  37. 37GarcíaNuevo León
    12.9
  38. 38La PazBaja California Sur
    9.1
  39. 39MéridaYucatán
    8.5
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

All cities in the world, January 2026 · Mexico now